EP3065955B1 - Tread comprising a block with a pluralitiy of sipes - Google Patents

Tread comprising a block with a pluralitiy of sipes Download PDF

Info

Publication number
EP3065955B1
EP3065955B1 EP14802331.0A EP14802331A EP3065955B1 EP 3065955 B1 EP3065955 B1 EP 3065955B1 EP 14802331 A EP14802331 A EP 14802331A EP 3065955 B1 EP3065955 B1 EP 3065955B1
Authority
EP
European Patent Office
Prior art keywords
block
sipe
tread
length
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14802331.0A
Other languages
German (de)
French (fr)
Other versions
EP3065955A1 (en
Inventor
Matthieu Bonnamour
Benoit DURAND-GASSELIN
Serge Lefebvre
Mathieu Vandaele
Kazutaka YOKOKAWA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Generale des Etablissements Michelin SCA
Original Assignee
Compagnie Generale des Etablissements Michelin SCA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale des Etablissements Michelin SCA filed Critical Compagnie Generale des Etablissements Michelin SCA
Publication of EP3065955A1 publication Critical patent/EP3065955A1/en
Application granted granted Critical
Publication of EP3065955B1 publication Critical patent/EP3065955B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0327—Tread patterns characterised by special properties of the tread pattern
    • B60C11/033—Tread patterns characterised by special properties of the tread pattern by the void or net-to-gross ratios of the patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0327—Tread patterns characterised by special properties of the tread pattern
    • B60C11/0332—Tread patterns characterised by special properties of the tread pattern by the footprint-ground contacting area of the tyre tread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1236—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special arrangements in the tread pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1272—Width of the sipe
    • B60C11/1281—Width of the sipe different within the same sipe, i.e. enlarged width portion at sipe bottom or along its length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0327—Tread patterns characterised by special properties of the tread pattern
    • B60C2011/0334—Stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B60C2011/1209—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe straight at the tread surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B60C2011/1213—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe sinusoidal or zigzag at the tread surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1204—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe
    • B60C2011/1227—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes with special shape of the sipe having different shape within the pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C2011/129—Sipe density, i.e. the distance between the sipes within the pattern

Definitions

  • the present invention relates to a tread of a tire for a motor vehicle comprising a block of rubber material whose length is much greater than the width, more particularly, the invention relates to a tread comprising a block having a plurality of incisions.
  • incisions in a tread of a tire in order to increase the grip of this tire.
  • the use of incisions makes it possible to increase the number of edges on the running surface of the tread, which promotes, in particular, grip on wet ground.
  • incisions is meant a cut in the tread delimiting walls of material, the width of this cut is appropriate to allow these walls of material to be brought into contact at least partially when passing through the contact area of the tire. with the ground.
  • the width of an incision is at most equal to 2 millimeters (mm).
  • the document FR43383 additional to the document FR759592 discloses the use of oblique incisions.
  • the oblique incisions delimit sub-blocks of rubber material. Depending on the width of these sub-blocks, that is to say on the distance between two adjacent oblique incisions, the wear resistance of these sub-blocks is more or less important.
  • the use of oblique incisions in the tread can generate additional noise when driving.
  • the documents US2013061992 , WO2007099084 , EP0369932 and JPH05286311 also discloses a tread comprising blocks and sub-blocks delimited by incisions.
  • pneumatic is meant all types of elastic tires subjected to internal pressure or not.
  • read of a tire is meant an amount of rubber material delimited by lateral surfaces and by two main surfaces, one of which is intended to come into contact with a roadway when the tire is rolling.
  • block on a tread means an element in relief delimited by grooves and comprising side walls and a contact face, the latter being intended to come into contact with the ground during a rolling operation.
  • groove means a cut in the tread delimiting walls of material, the width of this cut is such that the walls associated with this cut can not come into contact against each other under conditions usual driving.
  • the width for a groove is more than 2 millimeters.
  • incision is meant a cut in the tread delimiting walls of material, the width of this cut is suitable to allow the walls of the incision to be brought into contact, at least partially, when passing through the contact area between the tire and the ground.
  • the width for an incision is less than or equal to 2 millimeters.
  • Axial direction means a direction parallel to the axis of rotation of the tire.
  • circumferential direction is meant a direction which is tangent to any circle centered on the axis of rotation. This direction is perpendicular to the axial direction.
  • the invention relates to a tire tread comprising at least one block of rubber material of width W and length L with L »W.
  • This block extends in a circumferential direction (X) when the tread is mounted on the tire.
  • the block has a contact surface intended to come into contact with a ground and a first side wall and a second side wall delimiting this contact surface.
  • the block also comprises a plurality of incisions opening onto the contact surface of the block, each incision extending over the contact surface in an oblique direction, opening onto the first side wall and onto the second side wall, the incisions of the block being oriented in the same direction.
  • the incisions are distributed over the contact surface of the block so that when an incision reaches the second side wall, another incision begins from the first side wall, at the same circumferential level on the block.
  • Each incision comprises only a first incision part and a second incision part, the first incision part having in a transverse direction a length L1 by making an angle ⁇ with this transverse direction and the second incision part having a length L2 by making an angle ⁇ , with L1> L2 and ⁇ > ⁇ .
  • the invention thus proposes to maintain a certain distance between two adjacent incisions, so that the width of a sub-block delimited by these two incisions is large enough to give it good rigidity. This limits the risk of tearing off the sub-blocks during taxiing.
  • the invention further proposes to organize the incisions so that when the incisions are projected in the circumferential direction, the overlap of these incisions is limited.
  • Each oblique incision contributes to the grip performance of the tire, in particular when braking when cornering on wet ground. If oblique incisions overlap in the circumferential direction, the braking force would be taken up by these two incisions in their overlapping area. The wear of the sub-blocks associated with these two incisions is then modified in this overlapping zone since the braking force is distributed between these two sub-blocks. On the other hand, in areas where there is no overlap, a single oblique incision takes up all of these efforts.
  • the wear of the sub-blocks is then variable depending on whether the associated oblique incisions overlap or not with other oblique incisions. By planning to limit the overlap of the oblique incisions, it is ensured that the wear of the sub-blocks in the block is generally uniform. The durability of the tire is then improved.
  • the inventors have discovered that by proposing an uninterrupted succession of incisions in the length of the block, the noise generated by the tread on the ground is generally limited.
  • the sub-blocks of the block are given a certain versatility in the management of grip on wet ground both in turns and in straight lines.
  • the angle ⁇ is greater than 0 ° and less than 40 °.
  • the angle ⁇ is greater than or equal to 65 ° and less than or equal to 90 °.
  • the width W2 of the second incision part is determined as a function of the width W1, of the angle ⁇ , of the angle ⁇ , so that the area A1 formed by the crossing between this second part and a plane P extending in the transverse direction and perpendicular to the tread is generally identical to the area A2 formed by this plane P at the level of the first incision part.
  • all or part of the dimensions of the incisions vary in the length L of the block.
  • the incisions are part of a set of patterns that constitute the sculpture of the tread. It is known to provide patterns of different sizes in order to scramble the sound signal emitted by the tread pattern of the tire and to consequently decrease the remarkable emergences of the tread noise spectrum. By varying the dimensions of the incisions, it is possible to adapt the characteristics of these incisions to the size of the patterns in which they are inscribed.
  • the angle ⁇ of the second incision part varies in the length L of the block.
  • the length L2 of the second incision part varies in the length L of the block.
  • the incisions have between each incision part a connection radius of between 0.4 mm and 5 mm.
  • the incisions are partially or completely chamfered at the level of the contact surface of the block.
  • the figure 1 shows a partial view of a tread 1 of a tire according to a first embodiment of the invention.
  • the tread 1 comprises at least one block 3 of rubber material.
  • the block 3 is here delimited by two grooves 4 which have been grayed out here on the figure 1 to promote understanding of the invention. More particularly, the block 3 has a width W and a length L, this length L being much greater than the width W. By very much, it is meant that the length L is at least equal to 5 times the width W.
  • the block 3 when the tread 1 is mounted on a tire, the block 3 has the appearance of a strip extending in a circumferential direction X. This strip can extend over the entire circumference of the tire. As a variant, this strip extends over only part of this circumference.
  • the block 3 comprises a contact surface 5 intended to come into contact with a ground and a first side wall 7 and a second side wall 9 delimiting this contact surface 5.
  • the block 3 comprises a plurality of incisions 11, 11a, 11b opening onto the contact surface 5. Each incision extends in an oblique direction, opening onto the first side wall 7 and onto the second side wall 9.
  • the incisions of the block are here oriented in the same direction , that is to say that the incisions extend from the first side wall 7 to the second side wall 9 in a positive direction in X and in Y.
  • each incision 11 comprises at least a first incision part 13 and a second incision part 15, the first incision part 13 having in a transverse direction a length L1 by making an angle ⁇ with this transverse direction and the second incision part 15 having a length L2 by making an angle ⁇ , with L1> L2 and ⁇ > ⁇ .
  • the angle ⁇ is greater than 0 ° and less than 40 °. Likewise, the angle ⁇ is greater than or equal to 65 ° and less than or equal to 90 °.
  • the first incision part 13 has a width W1 and the second incision part 15 has a width W2.
  • the width W2 of the second incision part is determined as a function of the width W1, of the angle ⁇ , of the angle ⁇ , so that the area A2 formed by the crossing between this second part 15 and a plane P extending in the transverse direction Y and perpendicular to the tread 1 is identical to the area A1 formed by this plane P at the level of the first incision part 13.
  • the area A1 is generally equal to the area A2, that is to say that the area A1 is equivalent to +/- 10% of the area A2.
  • all or part of the incisions 11 vary in the length L of the block 3.
  • it is the angle ⁇ of the second incision part 15 which varies in the length L of the block 3.
  • it is the length L2 of the second incision part 15 which varies in the length L of the block 3.
  • the incisions 11 have between each incision part 13, 15 a connection radius R of between 0.4 mm and 5 mm.
  • the incisions 11 are partially or completely chamfered at the level of the contact surface 5 of the block 3.
  • the incisions 11 are partially or completely chamfered at the level of the contact surface 5 of the block 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

La présente invention concerne une bande de roulement d'un pneumatique pour véhicule automobile comportant un bloc en matériau caoutchoutique dont la longueur est très supérieure à la largeur, plus particulièrement, l'invention concerne une bande de roulement comportant un bloc présentant une pluralité d'incisions.The present invention relates to a tread of a tire for a motor vehicle comprising a block of rubber material whose length is much greater than the width, more particularly, the invention relates to a tread comprising a block having a plurality of incisions.

ETAT DE LA TECHNIQUESTATE OF THE ART

Le document FR759592 divulgue l'utilisation d'incisions dans une bande de roulement d'un pneumatique en vue d'augmenter l'adhérence de ce pneumatique. En effet, l'utilisation d'incisions permet d'augmenter le nombre d'arêtes sur la surface de roulement de la bande de roulement ce qui favorise, notamment, l'adhérence sur un sol mouillé. Par incisions, on entend une découpure dans la bande de roulement délimitant des parois de matière, la largeur de cette découpure est appropriée pour permettre la mise en contact au moins partielle de ces parois de matière lors du passage dans l'aire de contact du pneumatique avec le sol. La largeur d'une incision est au plus égale à 2 millimètres (mm).The document FR759592 discloses the use of incisions in a tread of a tire in order to increase the grip of this tire. Indeed, the use of incisions makes it possible to increase the number of edges on the running surface of the tread, which promotes, in particular, grip on wet ground. By incisions is meant a cut in the tread delimiting walls of material, the width of this cut is appropriate to allow these walls of material to be brought into contact at least partially when passing through the contact area of the tire. with the ground. The width of an incision is at most equal to 2 millimeters (mm).

Le document FR43383 additionnel au document FR759592 divulgue l'utilisation d'incisions obliques. Les incisions obliques délimitent des sous-blocs en matériau caoutchoutique. En fonction de la largeur de ces sous-blocs, c'est-à-dire en fonction de la distance entre deux incisions obliques adjacentes, la résistance à l'usure de ces sous-blocs est plus ou moins importante. En outre, l'utilisation d'incisions obliques dans la bande de roulement peut entraîner la génération de bruits supplémentaires lors des roulages. Les documents US2013061992 , WO2007099084 , EP0369932 et JPH05286311 divulguent également une bande de roulement comportant des blocs et des sous-blocs délimités par des incisions.The document FR43383 additional to the document FR759592 discloses the use of oblique incisions. The oblique incisions delimit sub-blocks of rubber material. Depending on the width of these sub-blocks, that is to say on the distance between two adjacent oblique incisions, the wear resistance of these sub-blocks is more or less important. In addition, the use of oblique incisions in the tread can generate additional noise when driving. The documents US2013061992 , WO2007099084 , EP0369932 and JPH05286311 also discloses a tread comprising blocks and sub-blocks delimited by incisions.

Il existe donc un besoin de proposer une bande de roulement présentant, sur tout ou partie de cette bande de roulement, une pluralité d'incisions obliques dont les règles de répartition optimisent la résistance à l'usure de cette bande de roulement tout en limitant les risques de génération de bruit au roulage.There is therefore a need to provide a tread having, on all or part of this tread, a plurality of oblique incisions whose distribution rules optimize the wear resistance of this tread while limiting the risks of noise generation while driving.

DEFINITIONSDEFINITIONS

Par « pneumatique », on entend tous les types de bandages élastiques soumis à une pression interne ou non.By "pneumatic" is meant all types of elastic tires subjected to internal pressure or not.

Par « bande de roulement » d'un pneumatique, on entend une quantité de matériau caoutchoutique délimitée par des surfaces latérales et par deux surfaces principales dont l'une est destinée à entrer en contact avec une chaussée lorsque le pneumatique roule.By “tread” of a tire is meant an amount of rubber material delimited by lateral surfaces and by two main surfaces, one of which is intended to come into contact with a roadway when the tire is rolling.

Par « bloc » sur une bande de roulement, on entend un élément en relief délimité par des rainures et comprenant des parois latérales et une face de contact, cette dernière étant destinée à venir en contact avec le sol au cours d'un roulage.The term “block” on a tread means an element in relief delimited by grooves and comprising side walls and a contact face, the latter being intended to come into contact with the ground during a rolling operation.

Par « rainure », on entend une découpure dans la bande de roulement délimitant des parois de matière, la largeur de cette découpure est telle que les parois associées à cette découpure ne peuvent pas venir en contact l'une contre l'autre dans des conditions usuelles de roulage. La largeur pour une rainure est supérieure à 2 millimètres.By "groove" means a cut in the tread delimiting walls of material, the width of this cut is such that the walls associated with this cut can not come into contact against each other under conditions usual driving. The width for a groove is more than 2 millimeters.

Par « incision », on entend une découpure dans la bande de roulement délimitant des parois de matière, la largeur de cette découpure est appropriée pour permettre la mise en contact, au moins partielle, des parois de l'incision lors du passage dans l'aire de contact entre le pneumatique et le sol. La largeur pour une incision est inférieure ou égale à 2 millimètres.By “incision” is meant a cut in the tread delimiting walls of material, the width of this cut is suitable to allow the walls of the incision to be brought into contact, at least partially, when passing through the contact area between the tire and the ground. The width for an incision is less than or equal to 2 millimeters.

Par « direction axiale », on entend une direction parallèle à l'axe de rotation du pneu."Axial direction" means a direction parallel to the axis of rotation of the tire.

Par « direction circonférentielle », on entend une direction qui est tangente à tout cercle centré sur l'axe de rotation. Cette direction est perpendiculaire à la direction axiale.By "circumferential direction" is meant a direction which is tangent to any circle centered on the axis of rotation. This direction is perpendicular to the axial direction.

Par « direction oblique », on entend une direction qui possède une composante axiale et une composante circonférentielle non nulles.By “oblique direction”, one understands a direction which has an axial component and a circumferential component non-zero.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention concerne une bande de roulement pour pneumatique comportant au moins un bloc en matériau caoutchoutique de largeur W et de longueur L avec L»W. Ce bloc s'étend selon une direction circonférentielle (X) lorsque la bande de roulement est montée sur le pneumatique. Le bloc comporte une surface de contact destinée à venir en contact avec un sol et une première paroi latérale et une seconde paroi latérale délimitant cette surface de contact. Le bloc comporte en outre une pluralité d'incisions débouchant sur la surface de contact du bloc, chaque incision s'étendant sur la surface de contact selon une direction oblique en débouchant sur la première paroi latérale et sur la seconde paroi latérale, les incisions du bloc étant orientées dans le même sens. Les incisions sont réparties sur la surface de contact du bloc de sorte que lorsqu'une incision atteint la seconde paroi latérale, une autre incision débute à partir de la première paroi latérale, à un même niveau circonférentiel sur le bloc. Chaque incision comporte uniquement une première partie d'incision et une seconde partie d'incision, la première partie d'incision ayant selon une direction transversale une longueur L1 en faisant un angle α avec cette direction transversale et la seconde partie d'incision ayant une longueur L2 en faisant un angle β, avec L1>L2 et β > α.The invention relates to a tire tread comprising at least one block of rubber material of width W and length L with L »W. This block extends in a circumferential direction (X) when the tread is mounted on the tire. The block has a contact surface intended to come into contact with a ground and a first side wall and a second side wall delimiting this contact surface. The block also comprises a plurality of incisions opening onto the contact surface of the block, each incision extending over the contact surface in an oblique direction, opening onto the first side wall and onto the second side wall, the incisions of the block being oriented in the same direction. The incisions are distributed over the contact surface of the block so that when an incision reaches the second side wall, another incision begins from the first side wall, at the same circumferential level on the block. Each incision comprises only a first incision part and a second incision part, the first incision part having in a transverse direction a length L1 by making an angle α with this transverse direction and the second incision part having a length L2 by making an angle β, with L1> L2 and β> α.

L'invention propose ainsi de maintenir une certaine distance entre deux incisions adjacentes, de sorte à ce que la largeur d'un sous-bloc délimité par ces deux incisions soit suffisamment importante pour lui conférer une bonne rigidité. On limite ainsi les risques d'arrachement des sous-blocs au cours des roulages.The invention thus proposes to maintain a certain distance between two adjacent incisions, so that the width of a sub-block delimited by these two incisions is large enough to give it good rigidity. This limits the risk of tearing off the sub-blocks during taxiing.

L'invention propose, en outre, d'organiser les incisions de sorte à ce que lorsqu'on projette les incisions selon la direction circonférentielle, le chevauchement de ces incisions est limité. Chaque incision oblique participe aux performances d'adhérence du pneumatique notamment lors de freinages en virage sur un sol mouillé. Si des incisions obliques se chevauchent selon la direction circonférentielle, l'effort de freinage serait repris par ces deux incisions dans leur zone de chevauchement. L'usure des sous-blocs associés à ces deux incisions est alors modifiée dans cette zone de chevauchement puisque l'effort de freinage est réparti entre ces deux sous-blocs. En revanche, dans les zones où il n'y a pas de chevauchement, une seule incision oblique reprend l'ensemble de ces efforts. L'usure des sous-blocs est alors variable selon que les incisions obliques associées sont en chevauchement ou pas avec d'autres incisions obliques. En prévoyant de limiter le chevauchement des incisions obliques, on s'assure que l'usure des sous-blocs dans le bloc est globalement uniforme. La pérennité du pneumatique est alors améliorée.The invention further proposes to organize the incisions so that when the incisions are projected in the circumferential direction, the overlap of these incisions is limited. Each oblique incision contributes to the grip performance of the tire, in particular when braking when cornering on wet ground. If oblique incisions overlap in the circumferential direction, the braking force would be taken up by these two incisions in their overlapping area. The wear of the sub-blocks associated with these two incisions is then modified in this overlapping zone since the braking force is distributed between these two sub-blocks. On the other hand, in areas where there is no overlap, a single oblique incision takes up all of these efforts. The wear of the sub-blocks is then variable depending on whether the associated oblique incisions overlap or not with other oblique incisions. By planning to limit the overlap of the oblique incisions, it is ensured that the wear of the sub-blocks in the block is generally uniform. The durability of the tire is then improved.

De plus, les inventeurs ont découvert qu'en proposant une succession ininterrompues d'incisions dans la longueur du bloc, on limite globalement le bruit généré par la bande de roulement sur un sol.In addition, the inventors have discovered that by proposing an uninterrupted succession of incisions in the length of the block, the noise generated by the tread on the ground is generally limited.

Enfin, en proposant des incisions complexes comportant des parties présentant des longueurs et des angles différents, on donne aux sous-blocs du bloc une certaine polyvalence dans la gestion de l'adhérence sur sol mouillé tant en virage qu'en ligne droite.Finally, by proposing complex incisions comprising parts having different lengths and angles, the sub-blocks of the block are given a certain versatility in the management of grip on wet ground both in turns and in straight lines.

Dans une variante de réalisation, l'angle α est supérieur à 0° et inférieur à 40°.In an alternative embodiment, the angle α is greater than 0 ° and less than 40 °.

On s'assure ainsi que les sous-blocs présentent de bonnes performances de freinage en ligne droite sur route mouillée.This ensures that the sub-blocks have good braking performance in a straight line on a wet road.

Dans une autre variante de réalisation, l'angle β est supérieur ou égal à 65° et inférieur ou égal à 90°.In another alternative embodiment, the angle β is greater than or equal to 65 ° and less than or equal to 90 °.

On s'assure ainsi que les sous-blocs présentent de bonnes performances d'adhérence en virage sur route mouillée.This ensures that the sub-blocks have good grip performance when cornering on wet roads.

Dans une autre variante de réalisation de l'invention, la première partie d'incision ayant une largeur W1 et la seconde partie d'incision ayant une largeur W2, la largeur W2 de la seconde partie d'incision est déterminée en fonction de la largeur W1, de l'angle α, de l'angle β, de sorte que l'aire A1 formée par le croisement entre cette seconde partie et un plan P s'étendant selon la direction transversale et perpendiculaire à la bande de roulement est globalement identique à l'aire A2 formée par ce plan P au niveau de la première partie d'incision.In another alternative embodiment of the invention, the first incision part having a width W1 and the second incision part having a width W2, the width W2 of the second incision part is determined as a function of the width W1, of the angle α, of the angle β, so that the area A1 formed by the crossing between this second part and a plane P extending in the transverse direction and perpendicular to the tread is generally identical to the area A2 formed by this plane P at the level of the first incision part.

De cette manière on s'assure que les variations de volume de creux, dans la longueur du bloc, sont limitées. On améliore ainsi les performances du pneumatique au niveau du bruit.In this way it is ensured that the variations in the volume of the trough, in the length of the block, are limited. This improves the performance of the tire in terms of noise.

Dans une autre variante de réalisation, tout ou partie des dimensions des incisions varient dans la longueur L du bloc.In another alternative embodiment, all or part of the dimensions of the incisions vary in the length L of the block.

Les incisions font parties d'un ensemble de motifs qui constitue la sculpture de la bande de roulement. Il est connu de prévoir des motifs de différentes tailles en vue de brouiller le signal sonore émis par la sculpture du pneumatique et de diminuer en conséquence les émergences remarquables du spectre du bruit de sculpture. En faisant varier des dimensions des incisions, il est possible d'adapter les caractéristiques de ces incisions à la taille des motifs dans lesquels elles s'inscrivent.The incisions are part of a set of patterns that constitute the sculpture of the tread. It is known to provide patterns of different sizes in order to scramble the sound signal emitted by the tread pattern of the tire and to consequently decrease the remarkable emergences of the tread noise spectrum. By varying the dimensions of the incisions, it is possible to adapt the characteristics of these incisions to the size of the patterns in which they are inscribed.

Dans un mode de réalisation préférentiel, l'angle β de la seconde partie d'incision varie dans la longueur L du bloc.In a preferred embodiment, the angle β of the second incision part varies in the length L of the block.

On favorise le freinage en ligne droite sur sol mouillé.We favor braking in a straight line on wet ground.

Dans un autre mode de réalisation préférentiel, la longueur L2 de la seconde partie d'incision varie dans la longueur L du bloc.In another preferred embodiment, the length L2 of the second incision part varies in the length L of the block.

On favorise l'adhérence en virage sur sol mouillé.It promotes grip when cornering on wet ground.

Dans un autre mode de réalisation de l'invention, les incisions présentent entre chaque partie d'incision un rayon de raccordement compris entre 0,4 mm et 5 mm.In another embodiment of the invention, the incisions have between each incision part a connection radius of between 0.4 mm and 5 mm.

De cette manière, on limite la génération de fissures au niveau des zones de raccordements entre les parties d'incisions.In this way, the generation of cracks is limited at the level of the connection zones between the parts of incisions.

Dans un autre mode de réalisation de l'invention, les incisions sont partiellement ou totalement chanfreinées au niveau de la surface de contact du bloc.In another embodiment of the invention, the incisions are partially or completely chamfered at the level of the contact surface of the block.

On améliore ainsi les performances du pneumatique en freinage et en virage sur un sol sec.This improves the performance of the tire under braking and cornering on dry ground.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention ressortiront de la description suivante, donnée à titre d'exemple, sans caractère limitatif, en regard des dessins annexés sur lesquels :

  • la figure 1 représente schématiquement une vue partielle d'une bande de roulement, selon un premier mode de réalisation de l'invention ;
  • la figure 2 représente schématiquement une vue agrandie d'une incision du bloc de la figure 1 ;
  • la figure 3 représente une vue en coupe A-A' d'une partie de l'incision de la figure 1 ;
  • la figure 4 représente une vue en coupe B-B' d'une partie de l'incision de la figure 1 ;
Other characteristics and advantages of the invention will emerge from the following description, given by way of example, without limitation, with reference to the appended drawings in which:
  • the figure 1 schematically represents a partial view of a tread, according to a first embodiment of the invention;
  • the figure 2 schematically represents an enlarged view of an incision of the block of the figure 1 ;
  • the figure 3 represents a sectional view AA 'of part of the incision of the figure 1 ;
  • the figure 4 represents a sectional view BB 'of part of the incision of the figure 1 ;

Dans la description qui va suivre, des éléments sensiblement identiques ou similaires seront désignés par des références identiques.In the description which follows, substantially identical or similar elements will be designated by identical references.

La figure 1 représente une vue partielle d'une bande de roulement 1 d'un pneumatique selon un premier mode de réalisation de l'invention.The figure 1 shows a partial view of a tread 1 of a tire according to a first embodiment of the invention.

La bande de roulement 1 comporte au moins un bloc 3 en matériau caoutchoutique. Le bloc 3 est ici délimité par deux rainures 4 qui ont été ici grisées sur la figure 1 pour favoriser la compréhension de l'invention. Plus particulièrement, le bloc 3 présente une largeur W et une longueur L, cette longueur L étant très supérieure à la largeur W. Par très supérieure, on entend que la longueur L est au moins égale à 5 fois la largeur W. De cette manière, lorsque la bande de roulement 1 est montée sur un pneumatique, le bloc 3 a l'allure d'une bande s'étendant selon une direction circonférentielle X. Cette bande peut s'étendre sur toute la circonférence du pneumatique. En variante, cette bande s'étend sur une partie seulement de cette circonférence.The tread 1 comprises at least one block 3 of rubber material. The block 3 is here delimited by two grooves 4 which have been grayed out here on the figure 1 to promote understanding of the invention. More particularly, the block 3 has a width W and a length L, this length L being much greater than the width W. By very much, it is meant that the length L is at least equal to 5 times the width W. In this way , when the tread 1 is mounted on a tire, the block 3 has the appearance of a strip extending in a circumferential direction X. This strip can extend over the entire circumference of the tire. As a variant, this strip extends over only part of this circumference.

De plus, le bloc 3 comporte une surface de contact 5 destinée à venir en contact avec un sol et une première paroi latérale 7 et une seconde paroi latérale 9 délimitant cette surface de contact 5. En outre, le bloc 3 comporte une pluralité d'incisions 11, 11a, 11b débouchant sur la surface de contact 5. Chaque incision s'étend selon une direction oblique en débouchant sur la première paroi latérale 7 et sur la seconde paroi latérale 9. Les incisions du bloc sont ici orientées dans le même sens, c'est-à-dire que les incisions s'étendent de la première paroi latérale 7 vers la seconde paroi latérale 9 selon un sens positif en X et en Y. Ces incisions sont réparties sur la surface de contact 5 du bloc 3 de sorte que lorsqu'une incision 11a atteint la seconde paroi latérale 9, une autre incision 11b débute à partir de la première paroi latérale 7, au même niveau N sur le bloc 3. Par « au même niveau N » sur le bloc, on entend une position circonférentielle déterminée sur ce bloc. En outre par « au même niveau », on entend qu'il peut exister un faible décalage entre la position circonférentielle des incisions 11a, 11b. Ce décalage est cependant limité. Il est inférieur à 5 % du pas P du sous-bloc 8 délimité par les deux incisions 11a et 11b. Pour évaluer la présence ou non d'un tel décalage, on utilisera la notion de fibre neutre associée à chaque incision. De plus, chaque incision 11 comporte au moins une première partie d'incision 13 et une seconde partie d'incision 15, la première partie d'incision 13 ayant selon une direction transversale une longueur L1 en faisant un angle α avec cette direction transversale et la seconde partie d'incision 15 ayant une longueur L2 en faisant un angle β, avec L1>L2 et β>α.In addition, the block 3 comprises a contact surface 5 intended to come into contact with a ground and a first side wall 7 and a second side wall 9 delimiting this contact surface 5. In addition, the block 3 comprises a plurality of incisions 11, 11a, 11b opening onto the contact surface 5. Each incision extends in an oblique direction, opening onto the first side wall 7 and onto the second side wall 9. The incisions of the block are here oriented in the same direction , that is to say that the incisions extend from the first side wall 7 to the second side wall 9 in a positive direction in X and in Y. These incisions are distributed over the contact surface 5 of the block 3 of so that when an incision 11a reaches the second side wall 9, another incision 11b starts from the first side wall 7, at the same level N on the block 3. By "at the same level N" on the block, we mean a circumferential position determined on this block. In addition, by "at the same level" is meant that there may be a slight offset between the circumferential position of the incisions 11a, 11b. This lag is however limited. It is less than 5% of the pitch P of the sub-block 8 delimited by the two incisions 11a and 11b. To evaluate the presence or not of such an offset, the notion of neutral fiber associated with each incision will be used. In addition, each incision 11 comprises at least a first incision part 13 and a second incision part 15, the first incision part 13 having in a transverse direction a length L1 by making an angle α with this transverse direction and the second incision part 15 having a length L2 by making an angle β, with L1> L2 and β> α.

Comme cela est visible à la figure 2 , l'angle α est supérieur à 0° et inférieur à 40°. De la même manière, l'angle β est supérieur ou égal à 65° et inférieur ou égal à 90°.As can be seen from the figure 2 , the angle α is greater than 0 ° and less than 40 °. Likewise, the angle β is greater than or equal to 65 ° and less than or equal to 90 °.

Dans un mode de réalisation préférentiel visible aux figures 3 à 4 , la première partie d'incision 13 a une largeur W1 et la seconde partie d'incision 15 a une largeur W2. La largeur W2 de la seconde partie d'incision est déterminée en fonction de la largeur W1, de l'angle α, de l'angle β, de sorte que l'aire A2 formée par le croisement entre cette seconde partie 15 et un plan P s'étendant selon la direction transversale Y et perpendiculaire à la bande de roulement 1 est identique à l'aire A1 formée par ce plan P au niveau de la première partie d'incision 13.In a preferred embodiment visible to figures 3 to 4 , the first incision part 13 has a width W1 and the second incision part 15 has a width W2. The width W2 of the second incision part is determined as a function of the width W1, of the angle α, of the angle β, so that the area A2 formed by the crossing between this second part 15 and a plane P extending in the transverse direction Y and perpendicular to the tread 1 is identical to the area A1 formed by this plane P at the level of the first incision part 13.

Plus particulièrement, l'aire A2 correspond au produit de la largeur W2'avec la profondeur P de l'incision, comme cela est visible à la figure 3 , et W2'= W2/(sin(β)). De la même manière, l'aire A1 correspond au produit de la largeur W1' avec la profondeur P de l'incision, comme cela est visible à la figure 4 , et W1' = W1/sin(α). De l'identité entre l'aire A1 et l'aire A2, on en déduit que W2=W1∗sin(β)/ sin(a). Etant donné que β est supérieur à α, on en déduit également que W2 est supérieur à W1.More particularly, the area A2 corresponds to the product of the width W2 'with the depth P of the incision, as can be seen in the figure 3 , and W2 '= W2 / (sin (β)). In the same way, the area A1 corresponds to the product of the width W1 'with the depth P of the incision, as can be seen in the figure 4 , and W1 '= W1 / sin (α). From the identity between area A1 and area A2, we deduce that W2 = W1 ∗ sin (β) / sin (a). Given that β is greater than α, we also deduce that W2 is greater than W1.

Dans une variante de réalisation, l'aire A1 est globalement égale à l'aire A2, c'est-à-dire que l'aire A1 équivaut à +/- 10% de l'aire A2.In an alternative embodiment, the area A1 is generally equal to the area A2, that is to say that the area A1 is equivalent to +/- 10% of the area A2.

Dans des variantes de réalisation tout ou partie des incisions 11 varient dans la longueur L du bloc 3. Ainsi, dans une variante de réalisation c'est l'angle β de la seconde partie d'incision 15 qui varie dans la longueur L du bloc 3. Dans une autre variante de réalisation, c'est la longueur L2 de la seconde partie d'incision 15 qui varie dans la longueur L du bloc 3.In alternative embodiments all or part of the incisions 11 vary in the length L of the block 3. Thus, in an alternative embodiment it is the angle β of the second incision part 15 which varies in the length L of the block 3. In another alternative embodiment, it is the length L2 of the second incision part 15 which varies in the length L of the block 3.

Dans une variante de réalisation, les incisions 11 présentent entre chaque partie d'incision 13, 15 un rayon de raccordement R compris entre 0,4 mm et 5 mm.In an alternative embodiment, the incisions 11 have between each incision part 13, 15 a connection radius R of between 0.4 mm and 5 mm.

Dans une autre variante de réalisation, les incisions 11 sont partiellement ou totalement chanfreinées au niveau de la surface de contact 5 du bloc 3.In another alternative embodiment, the incisions 11 are partially or completely chamfered at the level of the contact surface 5 of the block 3.

L'invention n'est pas limitée aux exemples décrits et représentés et diverses modifications peuvent y être apportées sans sortir de son cadre.The invention is not limited to the examples described and shown and various modifications can be made thereto without departing from its scope.

Dans une autre variante de réalisation visible à la figure 10, les incisions 11 sont partiellement ou totalement chanfreinées au niveau de la surface de contact 5 du bloc 3.In another alternative embodiment visible in FIG. 10 , the incisions 11 are partially or completely chamfered at the level of the contact surface 5 of the block 3.

L'invention n'est pas limitée aux exemples décrits et représentés et diverses modifications peuvent y être apportées sans sortir de son cadre tel que défini par les revendications ci-jointes.The invention is not limited to the examples described and shown and various modifications can be made thereto without departing from its scope as defined by the appended claims.

Claims (9)

  1. Tread for a tyre comprising at least one block (3) of rubbery material of width W and length L with L>>W, this block extending in a circumferential direction (X) when the tread (1) is mounted on the tyre, the block (3) comprising a contact surface (5) intended to come into contact with the ground and a first lateral wall (7) and a second lateral wall (9) delimiting this contact surface (5), the block (3) comprising a plurality of sipes (11) opening onto the contact surface (5) of the block, each sipe (11) extending over the contact surface (5) in an oblique direction opening onto the first lateral wall (7) and onto the second lateral wall (9), the sipes of the block being oriented in the same direction, the sipes (11) being distributed over the contact surface (5) of the block in such a way that when one sipe (11a) reaches the second lateral wall (9), another sipe (11b) circumferentially adjacent to said one sipe (11a) starts out from the first lateral wall (7) at a same circumferential level (N) on the block (3) with an offset which is less than 5 % of the pitch P of the sub-block (8) delimited by said two sipes (11a, 11b), each sipe (11) only comprising a first sipe part (13) and a second sipe part (15), characterized in that the first sipe part (13) has, in a transverse direction, a length L1 making an angle α with this transverse direction and the second sipe part (15) has a length L2 making an angle β, with L1>L2 and β > α.
  2. Tread according to Claim 1, characterized in that the angle α is greater than 0° and less than 40°.
  3. Tread according to either of Claims 1 and 2, characterized in that the angle β is greater than or equal to 65° and less than or equal to 90°.
  4. Tread according to any one of Claims 1 to 3, with the first sipe part (13) having a width W1 and the second sipe part (15) having a width W2, characterized in that the width W2 of the second sipe part (15) is determined as a function of the width W1, of the angle α, of the angle β, so that the area A2 formed by the intersection between this second part (15) and a plane P extending in the transverse direction (Y) and perpendicular to the tread (1) is identical overall to the area A1 formed by this plane P at the first sipe part (13).
  5. Tread according to one of Claims 1 to 4, characterized in that all or some of the dimensions of the sipes (11) vary along the length L of the block (3).
  6. Tread according to Claim 5, characterized in that the angle β of the second sipe part (15) varies along the length L of the block.
  7. Tread according to Claim 6, characterized in that the length L2 of the second sipe part (15) varies along the length L of the block.
  8. Tread according to one of Claims 1 to 7, characterized in that the sipes (11) have, between each sipe part (13, 15, 17), a fillet radius R of between 0.4 mm and 5 mm.
  9. Tread according to one of Claims 1 to 8, characterized in that the sipes (11) are partially or fully chamfered on the contact surface (5) of the block.
EP14802331.0A 2013-11-05 2014-11-05 Tread comprising a block with a pluralitiy of sipes Active EP3065955B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1360822A FR3012767B1 (en) 2013-11-05 2013-11-05 ROLLER BAND COMPRISING A BLOCK HAVING A PLURALITY OF INCISIONS
PCT/EP2014/073789 WO2015067642A1 (en) 2013-11-05 2014-11-05 Tread comprising a block having a plurality of sipes

Publications (2)

Publication Number Publication Date
EP3065955A1 EP3065955A1 (en) 2016-09-14
EP3065955B1 true EP3065955B1 (en) 2020-07-08

Family

ID=49759416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14802331.0A Active EP3065955B1 (en) 2013-11-05 2014-11-05 Tread comprising a block with a pluralitiy of sipes

Country Status (7)

Country Link
US (1) US10414212B2 (en)
EP (1) EP3065955B1 (en)
JP (1) JP2016534931A (en)
CN (1) CN105705347B (en)
BR (1) BR112016010110B1 (en)
FR (1) FR3012767B1 (en)
WO (1) WO2015067642A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6329010B2 (en) * 2014-06-13 2018-05-23 株式会社ブリヂストン Pneumatic tire
JP6605849B2 (en) * 2015-06-12 2019-11-13 株式会社ブリヂストン tire
WO2018122713A1 (en) * 2016-12-27 2018-07-05 Pirelli Tyre S.P.A. Tyre for vehicle wheels
JP6762267B2 (en) * 2017-06-07 2020-09-30 株式会社ブリヂストン tire
JP6988349B2 (en) * 2017-10-05 2022-01-05 住友ゴム工業株式会社 tire
JP6551506B2 (en) * 2017-12-28 2019-07-31 横浜ゴム株式会社 Pneumatic tire
JP7143717B2 (en) * 2018-10-12 2022-09-29 住友ゴム工業株式会社 tire
JP7225865B2 (en) * 2019-02-05 2023-02-21 住友ゴム工業株式会社 tire
WO2021089959A1 (en) * 2019-11-06 2021-05-14 Compagnie Generale Des Etablissements Michelin Tire comprising a tread
FR3108562B1 (en) * 2020-03-26 2022-03-11 Michelin & Cie Tire with a tread optimized for grip on snowy ground
JP2023147187A (en) 2022-03-29 2023-10-12 住友ゴム工業株式会社 tire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369932A2 (en) * 1988-11-14 1990-05-23 The Goodyear Tire & Rubber Company Vehicle tire
JPH05286311A (en) * 1992-04-06 1993-11-02 Bridgestone Corp Pneumatic tire
JP2001219718A (en) * 2000-02-14 2001-08-14 Ohtsu Tire & Rubber Co Ltd :The Pneumatic tire
WO2007099084A1 (en) * 2006-02-28 2007-09-07 Bridgestone Corporation Tyre

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR759592A (en) 1932-11-08 1934-02-05 Michelin & Cie Tire improvement
FR43383E (en) 1933-02-21 1934-05-11 Michelin & Cie Tire improvement
US2821231A (en) * 1954-12-31 1958-01-28 Gen Tire & Rubber Co Transversely-slitted tire tread
JPS54136002A (en) * 1978-04-08 1979-10-22 Bridgestone Corp Pneumatic radial tire for heavy car running on good highway at high speed
JPS61115703A (en) * 1984-11-09 1986-06-03 Sumitomo Rubber Ind Ltd Radial-ply tire for truck and bus
JPS62299407A (en) * 1986-06-20 1987-12-26 Bridgestone Corp Heavy duty pneumatic radial tire
JPH0310910A (en) * 1989-06-09 1991-01-18 Bridgestone Corp Heavy duty pneumatic tire
IT1276320B1 (en) * 1994-02-22 1997-10-28 Pirelli TIRE FOR MEDIUM / HEAVY TRANSPORT VEHICLES WITH UNIVERSAL TYPE TREAD
DE19812778C2 (en) * 1998-03-24 2002-07-04 Continental Ag Highly stable sipe, vulcanization form with such sipes, vehicle tires with a tread into which cuts are made by means of such sipes
JP4518657B2 (en) * 2000-09-28 2010-08-04 株式会社ブリヂストン Pneumatic tires for left-hand traffic vehicles and pneumatic tires for right-hand traffic vehicles
JP4777547B2 (en) * 2001-06-29 2011-09-21 株式会社ブリヂストン Pneumatic tire
US7028733B2 (en) * 2003-06-23 2006-04-18 The Goodyear Tire & Rubber Company Pneumatic tire having circumferentially extending rib with chamfers
US6968881B2 (en) * 2003-06-23 2005-11-29 The Goodyear Tire & Rubber Company Pneumatic tire including steeply slanted grooves, rib having sipes and blocks having sipes
US7484542B2 (en) * 2005-01-28 2009-02-03 The Goodyear Tire & Rubber Company Tire tread with sipes having tie bars
FR2888163B1 (en) * 2005-07-05 2007-09-14 Michelin Soc Tech TREAD BAND COMPRISING A SCULPTURE WITH INCISIONS.
JP4950491B2 (en) * 2005-12-29 2012-06-13 住友ゴム工業株式会社 Heavy duty tire
CN101370674A (en) * 2006-01-17 2009-02-18 株式会社普利司通 Pneumatic tire
JP5148102B2 (en) * 2006-11-24 2013-02-20 東洋ゴム工業株式会社 Pneumatic tire
JP4488055B2 (en) * 2007-11-02 2010-06-23 横浜ゴム株式会社 Pneumatic tire
JP5297778B2 (en) * 2008-02-27 2013-09-25 株式会社ブリヂストン Pneumatic tire
JP4669052B2 (en) * 2009-03-02 2011-04-13 東洋ゴム工業株式会社 Pneumatic tire
EP2429833B1 (en) * 2009-05-13 2016-06-29 Compagnie Générale des Etablissements Michelin Tire with a sipe having areas with reduced thickness and apparatus for making the same
FR2962372B1 (en) * 2010-07-06 2014-05-02 Michelin Soc Tech BEARING BAND PROTECTION DEVICE
CN103201123B (en) * 2010-09-09 2015-07-01 株式会社普利司通 Tire
FR2969961B1 (en) * 2011-01-04 2013-07-19 Michelin Soc Tech TIRE FOR VEHICLE HEAVY WEIGHT AND TIRE ARRANGEMENT ON MOTOR AXLE AND ON AXLE DIRECTOR
FR2972962B1 (en) * 2011-03-25 2013-03-29 Michelin Soc Tech OPTIMIZED ROLLER BELT IN WEAR FOR HEAVYWEIGHT TIRE
US20130014871A1 (en) * 2011-07-14 2013-01-17 Francois Pierre Charles Gerard Georges Tread for a pneumatic tire
US20130014870A1 (en) * 2011-07-14 2013-01-17 Francois Pierre Charles Gerard Georges Tread for a pneumatic tire
US9751365B2 (en) * 2011-09-13 2017-09-05 The Goodyear Tire & Rubber Company High mileage truck tire tread
JP5024485B1 (en) * 2011-09-22 2012-09-12 横浜ゴム株式会社 Pneumatic tire
JP5498466B2 (en) * 2011-10-20 2014-05-21 住友ゴム工業株式会社 Heavy duty tire
US9434211B2 (en) * 2012-04-30 2016-09-06 Michelin Recherche Et Technique S.A. Layered tire tread design for improved coast by noise and traction performance
US10596856B2 (en) * 2013-02-01 2020-03-24 Bridgestone Corporation Pneumatic tire
JP5525073B1 (en) * 2013-02-06 2014-06-18 株式会社ブリヂストン Heavy duty tire
JP6420547B2 (en) * 2014-01-27 2018-11-07 住友ゴム工業株式会社 Pneumatic tire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369932A2 (en) * 1988-11-14 1990-05-23 The Goodyear Tire & Rubber Company Vehicle tire
JPH05286311A (en) * 1992-04-06 1993-11-02 Bridgestone Corp Pneumatic tire
JP2001219718A (en) * 2000-02-14 2001-08-14 Ohtsu Tire & Rubber Co Ltd :The Pneumatic tire
WO2007099084A1 (en) * 2006-02-28 2007-09-07 Bridgestone Corporation Tyre

Also Published As

Publication number Publication date
CN105705347A (en) 2016-06-22
WO2015067642A1 (en) 2015-05-14
CN105705347B (en) 2017-08-25
JP2016534931A (en) 2016-11-10
US20160297253A1 (en) 2016-10-13
FR3012767B1 (en) 2015-10-23
BR112016010110B1 (en) 2020-12-08
FR3012767A1 (en) 2015-05-08
BR112016010110A2 (en) 2018-03-20
EP3065955A1 (en) 2016-09-14
US10414212B2 (en) 2019-09-17

Similar Documents

Publication Publication Date Title
EP3065955B1 (en) Tread comprising a block with a pluralitiy of sipes
EP3065956B1 (en) Tire tread with a block with multiple sipes
EP2099621B1 (en) Tread comprising dual orientation incisions
EP3292002B1 (en) Tyre tread comprising a block having a plurality of cutouts
EP3277521B1 (en) Tyre comprising a tread layer containing channels
EP3055142A1 (en) Tread comprising a directional tread pattern
EP3535139B1 (en) Tread comprising a long tread bar having a plurality of cut-outs
WO2016177977A1 (en) Tread including a block having a plurality of cut-outs
EP3535141B1 (en) Tread comprising a long tread bar having a plurality of cut-outs
EP3292003B1 (en) Tyre tread comprising a block having a plurality of cutouts
EP3377340B1 (en) Tire comprising a block with a tilted side wall
EP3292004B1 (en) Tyre tread comprising a block having a plurality of cutouts
EP3535140B1 (en) Tread comprising a long tread bar having a plurality of cut-outs
EP3383674B1 (en) Tread for heavy goods vehicle winter tyre
EP2507074B1 (en) Tyre tread comprising specific cavities
EP2507075B1 (en) Tyre tread comprising specific cavities
FR3083161A1 (en) TIRE COMPRISING A TREAD
WO2016156703A1 (en) Tread layer for a tyre comprising channels

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20160606

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

17Q First examination report despatched

Effective date: 20170706

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200127

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1288064

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200715

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014067544

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1288064

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200708

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201109

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201008

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201008

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201009

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014067544

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

26N No opposition filed

Effective date: 20210409

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20201105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201105

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20201130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201108

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231120

Year of fee payment: 10

Ref country code: DE

Payment date: 20231121

Year of fee payment: 10